ML19220D015
| ML19220D015 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/05/1979 |
| From: | Lafleur J NRC OFFICE OF INTERNATIONAL PROGRAMS (OIP) |
| To: | INTERNATIONAL ATOMIC ENERGY AGENCY |
| References | |
| NUDOCS 7905160181 | |
| Download: ML19220D015 (4) | |
Text
50-30
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l l
l NOTE: CONTINUATION 1
I I
0F STATIONS ATTACHEI UNCLASSIFIED P
USNRC:JDLAFLEUR 4/5/79: 492-7788 T
OES/ NET /EIC: DHC00PER EUR:RPE:
UBARMON
{ INFO}
EA/RA:
PCLEVELAND {INF0}
NEA/RA:
HENGELBRECHT
{ INFO}
ARA:
GJONES/JHENNEKE
{ INFO}
IO/ SCI:
AJILLION
{ INFO}
L/N:
RJBETTAUER
{ INFO}
J IMMEDIATE ATHENS, BERN IMMEDIATE, BOMBAY IMMEDIATE BONN IMMEDI-ATE, BRASILIA IMMEDIATE, 3RUSSELS IMMEDIATE, BUENOS AIRES IMMEDIATE, USIAEA, USOECD, USEEC - PASS TO PARA 1 PARTIES ASAP E.O.
11652: N/A Mb-TAGS:
- TECH,
SUBJECT:
THREE MILE ISLAND REACTOR STATUS REF: A-0221 ADDRESSEE 5 REQUESTED TO PASS FOLLOUING INFORNATION TO 1
OFFICIAL NRC CONTACTS IN HOST GOVERNMENTS AND TO VISITING SENIOR U.S. OFFICIALS, ASAP, DURING DAYLIGHT HOURS, AND TO USE AS APPROPRIATE IN ANSUERING INQUIRIES.
PLEASE NOTE THIS INFORMATION IS PRELIMINARY AND NOT FULLY EVALUATED.
2 PLANT STATUS A.
REACTOR PRESSURE REMAINS NEAR 1000 PSI UITH BULK CORE COOLANT INLET AND OUTLET TEMPERATURES APPR0XIMATELY 280 DEGREES F.
CORE THERM 0CUPLE READINGS ARE RELATIVELY UN-CHANGED AND INDICATE A MAXIMUM TEMPERATURE OF 4b2 DEGREES F UHICH IS UELL BELOW SATURATION TEMPERATURE FOR THE PRESENT REACTOR PRESSURE.
THREE THERMOCOUPLE READINGS REMAIN ABOVE 400 DEGREES F.
THE NUMBER OF THERMOCOUPLE READINGS THAT ARE BEING MONITORED HAS BEEN REDUCED TO 30 B.
CONTAINNENT ATMOSPHERE MEASUREMENTS INDICATE ABOUT 2%
ONE HYDROGEN RECOMBINER IS IN OPERATION, UITH ANOTHER UNIT ON STANDBY.
C.
A HEISE PRESSURE GAUGE HAS BEEN INSTALLED TO PROVIO g9 { UNCLASSIFIED __j _ _ _. _ __ _ _ _ _ _ 7 9 0 516 0 /3 4 _ _ [i -_
' UNCLASSIFIED l2 AN ALTERNATE METHOD OF DETERMINING THE PRESSURIZEk LEVEL BY MONITORING THE STEAM SPACE PRESSURE AND UATER SPACE PRESSURE IN THE PRESSURIZER. TESTING PROCEDURES ARE UNDER REVIEU. THE PRESSURIZER IS BEING VENTED TO THE CONTAINMENT FOR ABOUT 15 MINUES EVERY 6-8 HOURS. D. PLANS FOR USE OF THE ROBOT TO OBTAIN A PRIMARY SYSTEM SAMPLE HAVE BEEN DEVELOPED. 3 ENVIRONMENTAL STATUS A. PRELIMINARY ANALYSIS BY FDA 0F 16 MILK AND MISCELLA-NE005 FOOD PRODUCTS COLLECTED ON APRIL 3, 1979, SHOUED NO DETECTABLE IO. DINE CONCENTRATIONS IN 12 SAMPLES AND IODINE RANGING FROM 12-18 PCI/L IN 4 MI_K SAMPLES. THE STATE OF MARYLAND REPORTED ON APRIL'4, 1979 THE RESULTS OF ANALYSIS OF 12 MILK SAMPLES COLLECTED FROM 3 TO 20 MILES FROM THE SITE. ALL SAMPLES WERE REPORTED AS LESS THAN THE MINIMUM DETECTABLE ACTIVITY {MDA}. ONE PROCESS MILK SAMPLE FROM HARRISBURG ALSO UAS REPORTED BY THE STATE OF MARYLAND AS LESS THAN MDA. THREE UATER SAMPLES, TUO AT CONEUAGO AND ONE FROM HOLTUOOD DAM, UERE REPORTED AS LESS THAN MDA BY THE STATE OF MARYLAND. B. FDA COLLECTED 5 OTHER MILK SAMPLES ON APRIL 3, 1979, TUO OF UHICH SHOUED IODINE CONCENTRATIONS OF 12 AND 17 PCI/L. ONE SHOWED NO DETECTABLE IODINE AND THERE ARE NO RESULTS FOR THE OTHER TUO SAMPLES. ONE OF THESE SAMPLES SHOUED A CESIUM CONCENTRATION OF 13 PCI/L; THERE ARE NO CESIUM RESULTS FOR THE OTHER FOUR. THE STATE OF PENNSYL-VANIA ANALYSIS OF 15 MILK SAMPLES COLLECTED ON APRIL 3, 1979 SHOUED ONE WITH IODINE AT 19 PCI/L, 13 UITH NO DETECTABLE IODINE, AND 1 UITH NO RESULT. FOUR SHOUED CESIUM LEVfLS RANGING FROM 10-26 PCI/L AND THERE ARE NO RESULTS FOR THE OTHER 11 SAMPLES. ALL OF THE SAMPLES COLLECTED BY THE STATE AND FDA UERE SPLIT SAMPLES, I.E., SHARED TO OBTAIN INDEPENDENT RESULTS. C. CONTINUOUS GROUND LEVEL RADIATION SURVEYS PERFORMED ON APRIL 4, 1979 BY THE NRC SURVEY TEAMS ON THE EAST AND UEST SIDES OF THE SUSQUEHANNA RIVER FROM A DISTANCE OF 4 MILES NORTH TO 4 MILES SOUTH OF TMI SHOUED RADIATION LEVELS AVERAGING LESS THAN 0 03 MR/HR ON THE EAST SIDE OF THE RIVER AND 0 01 TO 0.04 MR/HR ON THE UEST SIDE OF THE RIVER. PREVALENT WIND DIRECTION DURING THE DAY UAS FROM THE EAST. D. SIX SURVEY FLIGHTS UERE PERFORMED ON APRIL 4, 1979 AT 0001, 0300, ObOD, 0900, 1200 AND 1522 HOURS. THE FLIGHTS IDENTIFIED THE PLUME TO BE IN THE SECTIONS OF 200 DEGREES AND 300 DEGREES. THE MAXIMUM RADIATION LEVELS UERE DETECTED DURING THE 0600 FLIGHT DURING UHICH LEVELS OF 12 MR/HR UERE DETECTED USING PORTABLE SURVEY METERS. THE 1522 FLIGHT USED "0RMALLY INSTALLED ARMS INSTRUMENTA-UNCLASSIFIED 119 200
UNCLASSIFIED l3 TION AND MEASURED RADIAT. ION LEVELS OF ABOUT 0.1 MR/HR {ABOUT 5 TIMES BACKGROUND} AT 1 MI'E DISTANCE AND ABOUT 0 0b MR/HR {ABOUT 3 TIMES BACKGROUNa} AT 2 MILES DISTANCE. E. ON APRIL 4, A 40-MINUTEsAIR SAMPLE TAKEN ABOUT 0100 NEAR YORK HAVEN, AND A 60-MINUTE SAMPLE TAKEN ABOUT 1300 IN GOLDSBORO, BOTH INDICATED LESS THAN 1 X 10-10 PCI/ML I-131 { MAXIMUM PERMISSIBLE CONCENTRATION FOR UNRESTRICTED AREAS}. F. DOSE RATES IN POPULATED AREAS AS MEASURED BY NRC THERM 0 LUMINESCENT DOSIMETERS {TLDS} SHOWED ONLY MINOR CHANGES FROM THE PREVIOUS DAY. MINOR FLUCTUATIONS ARE EXPECTED AT THESE LOU DOSE RATES. FOLLOUING ARE THE EXPOSURE RATES FOR PREVIOUSLY REPORTED LOCATIONS: DOSE RATE {MILLIROENTGENS PER HOUR} 4/4/79 MIDDLETOUN 0 01 GOLDSBORO 0 07 GOLDSBORO O.02 LEUISBERRY 0 03 EMIGSVILLE 0 02 4. OCCUPATIONAL RADIATION EXPOSURES. A. THREE OCCUPATIONAL RADIATION DOSES IN EXCESS OF THE REGULA ORY LIMIT OF 3 RENS PER CALENDAR QUARTER HAVE BEEN CONFIRMED. ALL THREE EXPOSURES UERE LICENSEE PERSONNEL AND UERE APPROXIMATELY 4 RENS {THIS INCLUDES THE TUO EXPOSURES REPORTED IN PNO-79-578}. E. TO DATE ON APRIL 4, 1979, THERE HAVE BEEN 12 INDIVI-DUALS WITH DOSES GREATER THAN 2 REMS BUT LESS THAN 3 REMS. THREE DOSE 5 ARE FOR THE PERIOD JANUARY 1 TO APRIL 4,
- 1979, BUT IT IS BELIEVED THE MAJORITY OF EXPOSURE WAS RECEIVED AS A RCSULT OF THE INCIDENT.
HORE SPECIFIC OCCUPATIONAL EX303URL DATA IS EXPECTED TO BE AVAILABLE IN THE NEAR FUTURE. 5 INDUSTRIAL UASTE TREATMENT SYSTEM {IUTS}. AS OF 0500 ON APRIL 5, 1979, THE IUTS SUMP UAS 747. FILLED UITl; ABOUT 100,000 GALLONS OF CAPACITY STILL AVAILABLE. THE STATE OF PENNSYLVANIA APPROVED RELEASE OF MATERIAL FROM THE IUTS THAT DOES NOT EXCEED PERMISSIBLE VALUES. NO RELEAS-~ HAVE BEEN MADE AS OF 0500 YY UNCLASSIFIED i19 201
s ACTION PRECEDENCE CONTINUED: IMMEDIATE COPENHAGEN IMMEDIATE HELSINKI IMMEDIATE LONDON IMMEDIATE MADRID IMMEDIATE MANILA IMMEDIATE MEXICO CITY IMMEDIATE NEU DELHI \\ IMMEDIATE OSLO IMMEDIATE PARIS IMMEDIATE REYKJAVIK IMMEDIATE RIO DE JANEIRO IMMEDIATE ROME IMMEDIATE SEOUL IMMEDIATE STOCKHOLM IMMEDIATi.' TEHR AN IMMEDIATE TEL AVIV IMMEDIATE THE HAGUE IMMEDIATE TOKYO IMMEDIATE VIENNA 119 202 .}}